Commit: patch 9.1.1752: tests: need another test for v9.1.1750 behaviour

[Christian Brabandt]

patch 9.1.1752: tests: need another test for v9.1.1750 behaviour

Commit: https://github.com/vim/vim/commit/fe0061c6093aac817ed6061b75868a97a116d9c0
Author: Girish Palya <giri...@gmail.com>
Date: Wed Sep 10 04:12:16 2025 -0400

patch 9.1.1752: tests: need another test for v9.1.1750 behaviour

Problem: tests: No test when deleting text after autocompletion with preinsert
did complete an entry
Solution: Verify, that after deletion autocompletion does not reinsert
the deleted text. Note: the actual issue was fixed with v9.1.1750.
(Girish Palya)

Pre v9.1.1750 behaviour:
When autocomplete is enabled with *preinsert*, deleting text after selecting a
longer match could cause unintended reinsertion, e.g.:

- Matches available: "foo" and "foobar".
- User selects "foobar" with Ctrl-N
- User deletes characters back to "foo".
- Autocomplete then incorrectly re-inserts "bar", preventing deletion past "foo".

v9.1.1750 removes the unwanted reinsertion so text can be deleted correctly.

closes: #18259

Signed-off-by: Girish Palya <giri...@gmail.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/src/testdir/test_ins_complete.vim b/src/testdir/test_ins_complete.vim
index 193775d1c..a5e7a8b81 100644
--- a/src/testdir/test_ins_complete.vim
+++ b/src/testdir/test_ins_complete.vim
@@ -5642,6 +5642,12 @@ func Test_autocomplete_completeopt_preinsert()
call feedkeys($"cwch\<C-N>\<Esc>n.n.", 'tx')
call assert_equal(repeat(['changed'], 3), getline(1, 3))

+ " Select a match and delete up to text equal to another match
+ %delete
+ call setline(1, ["foobar", "foo"])
+ call feedkeys("Go\<ESC>", 'tx')
+ call DoTest("f\<C-N>\<C-N>\<BS>\<BS>\<BS>\<BS>", 'foo', 3)
+
%delete _
let &l:undolevels = &l:undolevels
normal! ifoo
diff --git a/src/version.c b/src/version.c
index c74490c3e..7c186513b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -724,6 +724,8 @@ static char *(features[]) =

static int included_patches[] =
{ /* Add new patch number below this line */
+/**/
+ 1752,
/**/
1751,
/**/